Blue Mountains MP Trish Doyle is in hospital, undergoing her second surgery for the week on October 18.
"Through a preventative health step, I unfortunately ended up in hospital," she posted on Facebook.
"The nursing staff and doctors, the teams of excellent health care workers across the public health system never cease to amaze me. Thank you. We just need more of you. More hospital beds, more staff.
"As I undergo my second surgery for the week, this morning, my thoughts are with those who constantly suffer from chronic health conditions and pain. It's not a great place to be."
A spokesman for Ms Doyle said the MP was expected to return to work next week and was looking forward to getting back to work.